:root{
  --bg:#f9fafb;--card:#ffffff;--text:#111827;--muted:#6b7280;--border:#e5e7eb;--brand:#2563eb
}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,'Noto Sans','Apple Color Emoji','Segoe UI Emoji';}
.hot-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}
.hot-header h1{margin:0;font-size:20px}
.hot-header nav a{color:var(--brand);text-decoration:none}
.hot-main{max-width:1200px;margin:20px auto;padding:0 16px}
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.video-card{background:var(--card);border:1px solid var(--border);border-radius:10px;overflow:hidden;box-shadow:0 1px 2px rgba(0,0,0,0.04)}
.thumb{position:relative;background:#000}
.thumb video{width:100%;height:360px;object-fit:cover;display:block}
.badge{position:absolute;left:8px;top:8px;background:rgba(0,0,0,.6);color:#fff;font-size:12px;padding:4px 6px;border-radius:6px}
.video-meta{padding:10px 12px}
.title{font-size:14px;font-weight:600;margin:0 0 4px 0;line-height:1.4}
.stats{font-size:12px;color:var(--muted)}
.loading,.error{text-align:center;margin:16px;color:var(--muted)}

@media (max-width:640px){
  .thumb video{height:220px}
}